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Thread: User input trouble

  1. #1
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    Default User input trouble

    Hi all,

    First time poster from Ireland here.

    Anything i know from programming is based off a very quick dip into codeacademy and the first lecture given thus far.

    Below is my code for taking the radius of a circle from the user and then going ahead to give radius, area, circumference.

    I keep getting a "couldn't find symbol" error when compiling, which i have hunted down to be an issue with my variables.

    For the life of my i cannot figure out how to get the scanner element working.

    Any and all advice is welcome,

    CC.



    import java.util.scanner;
    class CalculateCircleUserInput
    {
    public static void main(String[] args)
    {
    Scanner radius = new Scanner(System.in);
    System.out.println("Please input the circle's radius: ");
    double radius = radius.nextdouble();
    double pi = 3.1416;
    double area = pi*radius*radius;
    double circumference = pi*radius*2;

    System.out.println("You have defined the circle's radius as: " + radius);
    System.out.println("It's area is " + area);
    System.out.println("It's circumference is " + circumference);
    }
    }


  2. #2
    Senior Member PhHein's Avatar
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    Default Re: User input trouble

    You have a Scanner called radius and a double called radius. You have confused the compiler. Make sure your variables have unique names. The next error you'll run into is a method is not defined/cannot find symbol message. Java is case sensitive. I'll leave it to you to find the cause.

  3. #3
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    Default Re: User input trouble

    Hi,

    Thanks for that. Problem(s) solved.

    I'm still getting to grip with how sensitive code is.

    Cheers,

    CC.

  4. #4
    Senior Member PhHein's Avatar
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    Default Re: User input trouble

    Oh, code isn't sensitive, the compiler is dead stupid and only works properly if you have every single character correct

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